<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body {
            text-align: center;
            line-height: 50px;
        }

        .hezi {
            width: 500px;
            height: 200px;
            /* margin: auto; */
   
        }

        .ele {
            width: 100%;
            float: left;
        }

        .float {
            width: 50px;
            height: 50px;
        }

        .front {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: red;
            
        }

        .back {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: blue;
            float: left;
        }
    </style>
    </style>
</head>

<body>
    <div class="hezi">
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>
        <span class="front ele">前</span>

        <img class="float ele" src="./lx.png">

        <span class="back">后</span>
        <span class="back">后</span>
        <span class="back">后</span>
        <span class="back">后</span>
        <span class="back">后</span>
        <span class="back">后</span>
        <span class="back">后</span>
        <span class="back">后</span>
        <span class="back">后</span>
        <span class="back">后</span>
        <span class="back">后</span>
        <span class="back">后</span>
        <span class="back">后</span>
        <span class="back">后</span>
    </div>
</body>

</html>